Broomfield County, Colorado
County storm and disaster record · FIPS 08014 · population 74,051 · 33 sq mi
NOAA's Storm Events Database holds 119 records for Broomfield County, Colorado from 1950 through June 30, 2026, on 70 days; the most frequent are hail reports (37 records). 71 of them are forecast-zone records, which the National Weather Service files once per zone: a county covered by several zones receives each one, so a single storm can add several records on the same day. The deadliest single record is the August 1, 2024 wildfire, filed for the forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County, which covers the county: 1 death. FEMA has issued 6 declarations naming the county since 2003, 4 of them for natural hazards; the latest for a natural hazard was “Severe Storms, Flooding, Landslides, and Mudslides” on September 12, 2013.
The record, 1950 to 2026
Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).
- recorded, no damage figure
- under $100,000
- $100,000 or more
- $1 million or more
- $10 million or more, or a death
- $100 million or more, or 10 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- 1955: wind and hail recorded from 1955
- 1996: all 48 event types from 1996
- Storm records
- 119on 70 days, 1950 to June 30, 2026
- Deaths recorded
- 20 injuries
- Damage, 2025 dollars
- $546Kas filed (scale steps before 1993)
- FEMA declarations
- 6latest 2020
Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.
What hazards hit Broomfield County most?
The most frequent records are hail reports: 37 since 2002. 59% of its hail reports since 2002 fell in May and June. Census land area gives no figure for Broomfield County under this code, so it carries no per-area rank.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Hail | 37 | 21 | 2002-2025 | 0 | 0 | $235K | – |
| Winter storms | 37 | 19 | 2024-2026 | 0 | 0 | – | – |
| High wind and dust storms | 27 | 18 | 2024-2026 | 0 | 0 | $300K | – |
| Severe thunderstorm wind | 7 | 5 | 2011-2024 | 0 | 0 | – | – |
| Extreme cold | 4 | 2 | 2024-2025 | 0 | 0 | – | – |
| Floods | 3 | 2 | 2013-2022 | 0 | 0 | $10K | – |
| Wildfires | 3 | 3 | 2024-2026 | 2 | 0 | – | – |
| Lightning | 1 | 1 | 2019-2019 | 0 | 0 | $1K | – |
Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.
When was the last damaging storm in Broomfield County?
The most recent record with damage, injuries or deaths is the December 17, 2025 high wind ($300,000 in damage in 2025 dollars).
A 91 mph wind gust occurred in the middle of Boulder and a 87 mph wind gust was measured at the Boulder Airport. Multiple trees were blown down on the University of Colorado campus. Powerline poles were blown over north of Golden along highway 93 and near the intersection with 64th Parkway. Boulder Valley School District estimated $250,000 in damage from the wind storm to its schools/buildings. The following highways were closed due to the high winds...Highway 128 from Superior to Highway 93, Highway 93 between Boulder and Arvada, and Highway 36 between Boulder and Lyons. Several reports of car and structure windows broken by flying debris and flying rocks.
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 1300897)
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-05-18 | Winter WeatherBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 0 | 0 | – | |
| 2026-05-05 | Winter StormAdams County and 4 more · forecast zone N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County | 0 | 0 | – | |
| 2026-05-05 | Winter StormBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 0 | 0 | – | |
| 2026-03-12 | High WindBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 76 kt wind | 0 | 0 | – |
| 2026-03-06 | Winter WeatherAdams County and 4 more · forecast zone N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County | 0 | 0 | – | |
| 2026-03-06 | Winter WeatherBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 0 | 0 | – | |
| 2026-02-25 | WildfireAdams County and 4 more · forecast zone N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County | 0 | 0 | – | |
| 2026-02-17 | High WindBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 53 kt wind | 0 | 0 | – |
| 2025-12-19 | High WindBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 89 kt wind | 0 | 0 | – |
| 2025-12-17 | High WindAdams County and 4 more · forecast zone N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County | 60 kt wind | 0 | 0 | – |
| 2025-12-17 | High WindBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 79 kt wind | 0 | 0 | $300K |
| 2025-12-03 | Winter WeatherAdams County and 4 more · forecast zone N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County | 0 | 0 | – |
Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.
The deadliest and costliest records
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2024-08-01 | WildfireBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County The Stone Canyon Fire started on July 30, 2024 in the Stone Canyon area outside the Town of Lyons. The burned 1,557 acres, destroying five homes and leading to one person’s death. | 1 | 0 | – | |
| 2024-07-30 | WildfireBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County The Stone Canyon Fire started on July 30, 2024 in the Stone Canyon area outside the Town of Lyons. The burned 1,557 acres, destroying five homes and leading to one person’s death. | 1 | 0 | – |
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2025-12-17 | High WindBoulder County and 2 more · forecast zone Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County | 79 kt wind | 0 | 0 | $300K |
Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.
Is it getting more frequent?
Records per decade for Broomfield County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Hail | 0 | 0 | 0 | 0 | 0 | 13 | 16 | 8 |
| Winter storms | – | – | – | – | 0 | 0 | 0 | 37 |
| High wind and dust storms | – | – | – | – | 0 | 0 | 0 | 27 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
59% of its hail reports since 2002 fell in May and June. The two busiest months are in violet.
The values, month by month
Jan 12 · Feb 13 · Mar 10 · Apr 4 · May 18 · Jun 17 · Jul 12 · Aug 13 · Sep 4 · Oct 1 · Nov 6 · Dec 9 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Broomfield County
FEMA's register lists 6 declarations that include Broomfield County: one major disaster, 5 emergencies and 0 fire management assistance declarations. Most were for biological (2) and snowstorm (2).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2020-03-28 | DR-4498 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3436 | Biological | Covid-19 |
| 2013-09-12 | EM-3365 | Flood | Severe Storms, Flooding, Landslides, and Mudslides |
| 2007-01-07 | EM-3270 | Snowstorm | Snow |
| 2005-09-05 | EM-3224 | Coastal Storm | Hurricane Katrina Evacuation |
| 2003-04-09 | EM-3185 | Snowstorm | Snow |
Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.
How many floods has Broomfield County had?
NOAA's Storm Events Database holds 3 flood or flash flood records for Broomfield County from 2013 to 2022, on 2 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Broomfield County ranks 2085th of 2,942 U.S. counties.
The National Flood Insurance Program has paid $179,000 on 20 claims filed in Broomfield County; the most in one year was 3 in 1978. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1978: 3 · 1979: 1 · 1980: 1 · 1995: 1 · 1997: 1 · 1999: 1 · 2003: 1 · 2004: 1 · 2011: 1 · 2013: 1 · 2015: 3 · 2017: 1 · 2019: 1 · 2022: 1 · 2023: 2; the other years: 0.
Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.
FEMA's modeled risk for Broomfield County
FEMA's National Risk Index rates Broomfield County Very Low overall, with an expected annual loss of $17.1 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Lightning | Relatively High | $1.5M | 47 a year (modeled) |
| Hail | Relatively Moderate | $3.0M | 6.3 a year (modeled) |
| Winter Weather | Relatively Moderate | $252K | 14 a year (modeled) |
| Strong Wind | Relatively Moderate | $1.0M | 1.2 a year (modeled) |
| Wildfire | Relatively Low | $325K | once in about 1,303 years (modeled) |
| Tornado | Relatively Low | $2.9M | once in about 33 years (modeled) |
| Cold Wave | Relatively Low | $1.5M | 1.2 a year (modeled) |
| Ice Storm | Relatively Low | $84K | once in about 67 years (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Broomfield County
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Hail in ColoradoThe state's hail reports, by county, year and month
- The Colorado recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Broomfield CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Broomfield County's FEMA declarations (CSV)6 rows: every declaration that named the county, for your own analysis